package com.lzq.leetcode.hoot100.ds;

public class TreeNode {
     public int val;
     public TreeNode left;
     public TreeNode right;
     TreeNode() {}
     TreeNode(int val) { this.val = val; }
     TreeNode(int val, TreeNode left, TreeNode right) {
         this.val = val;
         this.left = left;
        this.right = right;
    }
}
